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Finding the Third Proportional to 758 and 1,147.25

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Solution

The third proportional to 758 and 1,147.25 is: 1,736.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    758 : 1,147.25 = 1,147.25 : x
  2. Step 2: Convert to fraction form
    758/1,147.25 = 1,147.25/x
  3. Step 3: Cross multiply
    758x = 1,147.25 × 1,147.25
  4. Step 4: Simplify right side
    758x = 1,316,182.56
  5. Step 5: Solve for x
    x = 1,316,182.56/758
  6. Step 6: Final answer
    x = 1,736.39

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.